Add some issue_template files

.github/CONTRIBUTING.md

@@ -4,12 +4,11 @@ These are the guidelines for contributing to this repository.
 
 ## Issues
 
-File an issue if you think you've found a bug. Please describe
+Please follow the each template by the type of your issue.
 
-1. How can it be reproduced
-2. What was expected
-3. What actually occurred
-4. What version of the involved component
+- [Bug Report](https://github.com/naokazuterada/MarkdownTOC/issues/new)
+- [Feature Request](https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md)
+- [Question](https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md)
 
 ### Way of operation
 
@@ -20,6 +19,10 @@ File an issue if you think you've found a bug. Please describe
         - Not obvious: Problem is not obvious, or not reproduced.
         - Not responding: Author doesn't respond in 3 weeks.
 
+## Gitter
+
+If you want to ask more easily, please use [Gitter](https://gitter.im/naokazuterada/MarkdownTOC) chat system.
+
 ## Patches
 
 Patches for fixes, features, and improvements are accepted via pull requests.

.github/ISSUE_TEMPLATE.md

@@ -1,8 +1,25 @@
 <!--
-File an issue if you think you've found a bug. Please describe
 
-1. How can it be reproduced
-2. What was expected
-3. What actually occurred
-4. What version of the involved component
--->
+Template: BUG REPORT
+
+This is an issue for a bug report.
+You should label `bug-report`.
+
+
+If your purpose is different, please visit following links.
+
+FEATURE REQUEST:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md
+
+QUESTION:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md
+
+-->
+
+# How can it be reproduced
+
+# What was expected
+
+# What actually occurred
+
+# What version of the involved component

.github/ISSUE_TEMPLATE/feature.md

@@ -0,0 +1,23 @@
+<!--
+
+Template: FEATURE REQUEST
+
+This is an issue for a feature request.
+You should label `feature-request`.
+
+
+If your purpose is different, please visit following links.
+
+BUG REPORT:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=bug.md
+
+QUESTION:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=question.md
+
+-->
+
+# Purpose
+
+# How important it is
+
+# Ideal implementation

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,19 @@
+<!--
+
+Template: QUESTION
+
+This is an issue for a feature request.
+You should label `question`.
+
+
+If your purpose is different, please visit following links.
+
+BUG REPORT:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=bug.md
+
+FEATURE REQUEST:
+https://github.com/naokazuterada/MarkdownTOC/issues/new?template=feature.md
+
+-->
+
+# Question